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Finding the Third Proportional to 28,422 and 61,821.75

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Solution

The third proportional to 28,422 and 61,821.75 is: 134,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422 : 61,821.75 = 61,821.75 : x
  2. Step 2: Convert to fraction form
    28,422/61,821.75 = 61,821.75/x
  3. Step 3: Cross multiply
    28,422x = 61,821.75 × 61,821.75
  4. Step 4: Simplify right side
    28,422x = 3,821,928,773.06
  5. Step 5: Solve for x
    x = 3,821,928,773.06/28,422
  6. Step 6: Final answer
    x = 134,470.79

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.